You might have heard about my earlier demonstration in which people fail to notice a person in a gorilla suit when they are busy counting how many times a group of people pass a basketball. People can only experience the gorilla effect once-after they know to look for a gorilla, it is no longer unexpected. But what would happen if we tried showing you another video just like it? If you know that something unexpected might happen, and you actively look for unexpected events, does that make you more likely to notice them? Try it for yourself.

David Cherry (whose Unreal Movement Triangles we already covered) created something we haven’t had the opportunity to see for quite some time now. His “animation” effect works flawlessly! In order for you to see the effect in its full glory, I was forced to edit David’s original attachment, yet it’s still available if you click on the picture and open it full size. Am I imagining things, or does the phantom cross really appear to continuously shrink?